In general, it is quiet and stays out of the way. In the few messages it presents to the user, it provides useful commentary about whether or not the change it detected is likely harmless or malicious, which is useful for non-technical users.

I highly recommend this add-on.

This review is for a previous version of the add-on (2.0.12.1-signed.1-signed).

Simple, lightweight, does exactly what it saysRated 5 out of 5 stars

This add-on adds semi-permanent "opt-out" cookies for major tracking ad networks. (I say "semi-permanent", because the opt-out cookies get automatically re-generated if deleted unless you uninstall the add-on, then you can delete them if you wish.)

It does not block ads, and there's no visible difference in the user interface when using it. It's extremely lightweight, requires no configuration, and stays out of the way. Truly "set it and forget it".

For those concerned with advertising networks setting long-term tracking cookies to build profiles on users, this add-on alleviates some of those risks and increases privacy. Rather than having the ad networks set those long-term cookies, this add-on ensures that the "opt-out" cookies for those networks are maintained in one's browser (even after one deletes cookies), and so prevents those networks from using cookies to identify and track users. To this end, it's excellent.

This review is for a previous version of the add-on (1.3.2.1-signed.1-signed).

Lightweight, informative, and ad-free!Rated 5 out of 5 stars

All the other weather-monitoring add-ons I've seen are pretty "heavy" -- WeatherBug has a big honking advertisement, etc.

ForecastFox is lightweight, provides useful information, and lacks any advertising with the in-browser interface (of course, when one goes to AccuWeather for more details, some advertising is displayed, but it's not nearly as obnoxious as the WeatherBug ads).

Works fantastically!Rated 5 out of 5 stars

I have need to public PEM versions of my public S/MIME certs on my website, but Firefox does not provide this ability. I could use OpenSSL, but that is somewhat of a hassle. Cert Viewer Plus makes the procedure very easy indeed.

Works excellently...Rated 5 out of 5 stars

I use Enigmail 0.94.2 with Thunderbird 1.5.0.13 (the versions supported by Ubuntu linux) and it works excellently.

The integration is seamless, even having little details like the "this message will be signed" and "this message will be encrypted" indicators in the bottom-right of a new message, just like how Thunderbird works with S/MIME.

Having one-click decryption and verification is also nice. The Enigmail key manager is also excellent, though I find it lacks some features (like being able to select a default key) that must be selected with Seahorse. Also, having a user-configurable time for caching passphrases would be nice; 5 minutes of non-idle time is too short for my needs.

Enigmail's easy-to-use frontend to GPG and its excellent integration with Thunderbird make this add-on a most excellent choice.